/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0e1a;
  --bg2: #111827;
  --card: #1a2035;
  --card-hover: #1f2847;
  --border: #2a3550;
  --t1: #f1f5f9;
  --t2: #94a3b8;
  --t3: #64748b;
  --green: #10b981;
  --blue: #3b82f6;
  --amber: #f59e0b;
  --purple: #8b5cf6;
  --red: #ef4444;
  --cyan: #06b6d4;
  --r: 10px;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--t1);
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 16px;
}

/* ─── Header ──────────────────────────────────────────────── */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header h1 { font-size: 1rem; font-weight: 600; }

.plan-badge, .season-badge {
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.plan-badge { background: rgba(59,130,246,0.15); color: var(--blue); }
.season-badge { background: rgba(59,130,246,0.15); color: var(--blue); }
.season-badge.summer { background: rgba(245,158,11,0.15); color: var(--amber); }

.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--red); }
.status-dot.connected { background: var(--green); box-shadow: 0 0 6px var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }
.status-text { font-size: 0.7rem; color: var(--t2); }
.timestamp { font-family: 'JetBrains Mono', monospace; font-size: 0.65rem; color: var(--t3); }
.update-ago { font-family: 'JetBrains Mono', monospace; font-size: 0.65rem; color: var(--t3); min-width: 40px; }

/* ─── Dashboard Grid ──────────────────────────────────────── */
.dashboard {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px 0 8px;
  min-height: 0;
}

.col-left, .col-right {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}

/* ─── Top Row: Gauge + Stats ──────────────────────────────── */
.top-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 10px;
}

.power-gauge-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 12px 16px 8px;
}

.gauge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.gauge-title { font-size: 0.8rem; font-weight: 600; color: var(--t2); }
.gauge-header-right { display: flex; align-items: center; gap: 8px; }
.gauge-subtitle { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--cyan); }

.unit-toggle {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--blue);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.15s;
}
.unit-toggle:hover { background: rgba(59,130,246,0.15); border-color: var(--blue); }
.unit-toggle.amps-mode { color: var(--amber); border-color: var(--amber); background: rgba(245,158,11,0.15); }

.gauge-container {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 4px 0 0;
}
.gauge-svg { width: 100%; max-width: 240px; }
.gauge-value { position: absolute; bottom: 4px; text-align: center; }
.power-number { font-family: 'JetBrains Mono', monospace; font-size: 2.2rem; font-weight: 700; line-height: 1; }
.power-unit { font-size: 1rem; color: var(--t3); margin-left: 2px; }
.gauge-footer { display: flex; justify-content: space-between; padding: 0 4px; }
.gauge-label { font-size: 0.6rem; color: var(--t3); font-family: 'JetBrains Mono', monospace; }

.power-low { color: var(--green); }
.power-medium { color: var(--amber); }
.power-high { color: var(--red); }

/* Quick Stats */
.quick-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.qs {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.qs-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--t1);
}

.qs-label {
  font-size: 0.6rem;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-weight: 500;
}

/* ─── Billing Row ─────────────────────────────────────────── */
.billing-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.bill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 12px;
  text-align: center;
}
.bill-card.main-cost {
  background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(59,130,246,0.08));
  border-color: rgba(16,185,129,0.2);
}
.bill-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  font-weight: 700;
}
.bill-val.projected { color: var(--amber); }
.bill-label { font-size: 0.6rem; color: var(--t3); text-transform: uppercase; letter-spacing: 0.3px; margin-top: 2px; }
.bill-sub { font-weight: 400; }

/* ─── Tier Bar ────────────────────────────────────────────── */
.tier-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 8px 14px;
}

.tier-bar {
  height: 16px;
  background: var(--bg2);
  border-radius: 8px;
  position: relative;
  overflow: visible;
  margin-bottom: 6px;
}
.tier-bar-fill { height: 100%; border-radius: 8px; position: absolute; top: 0; transition: width 0.5s; }
.tier-bar-fill.tier1 { background: linear-gradient(90deg, #10b981, #34d399); left: 0; z-index: 2; }
.tier-bar-fill.tier2 { background: linear-gradient(90deg, #f59e0b, #fbbf24); left: 0; z-index: 1; }
.tier-bar-marker { position: absolute; top: -2px; bottom: -12px; z-index: 3; transform: translateX(-50%); }
.marker-line { width: 2px; height: 20px; background: var(--t1); opacity: 0.4; margin: 0 auto; }

.tier-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.65rem;
  color: var(--t3);
  font-family: 'JetBrains Mono', monospace;
}
.tier-legend-inline { display: flex; align-items: center; gap: 6px; }
.ld { width: 7px; height: 7px; border-radius: 2px; display: inline-block; margin-left: 6px; }
.ld.t1 { background: var(--green); }
.ld.t2 { background: var(--amber); }
.ld.care { background: var(--purple); }
.lr { color: var(--t3); }

/* ─── Chart Panel ─────────────────────────────────────────── */
.chart-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 14px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.chart-title { font-size: 0.8rem; font-weight: 600; color: var(--t2); }
.chart-tabs { display: flex; gap: 2px; background: var(--bg2); border-radius: 6px; padding: 2px; }
.chart-tab {
  background: none; border: none; color: var(--t3); padding: 3px 10px; border-radius: 4px;
  font-size: 0.65rem; font-weight: 600; cursor: pointer; font-family: 'JetBrains Mono', monospace;
}
.chart-tab.active { background: var(--blue); color: white; }
.chart-container { flex: 1; min-height: 0; position: relative; }

/* ─── Right Column Panels ─────────────────────────────────── */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 14px;
}
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--t2);
}

/* ─── Tesla ───────────────────────────────────────────────── */
.tesla-badge {
  background: rgba(239,68,68,0.12);
  color: var(--red);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.6rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}
.tesla-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tesla-card {
  background: var(--bg2);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid transparent;
}
.tesla-card.charging { border-color: rgba(16,185,129,0.3); background: linear-gradient(135deg, rgba(16,185,129,0.05), var(--bg2)); }
.tesla-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tesla-name { font-size: 0.75rem; font-weight: 600; display: flex; align-items: center; gap: 4px; }
.tesla-icon { font-size: 0.9rem; }
.tesla-status { font-size: 0.55rem; font-weight: 600; padding: 2px 8px; border-radius: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.tesla-status.active { background: rgba(16,185,129,0.15); color: var(--green); }
.tesla-status.idle { background: rgba(100,116,139,0.15); color: var(--t3); }
.tesla-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }
.tesla-stat { text-align: center; }
.tesla-stat-value { font-family: 'JetBrains Mono', monospace; font-size: 1.1rem; font-weight: 700; line-height: 1.2; }
.tesla-stat-label { font-size: 0.55rem; color: var(--t3); text-transform: uppercase; }
.tesla-amp-bar { height: 5px; background: rgba(255,255,255,0.05); border-radius: 3px; overflow: hidden; margin-bottom: 4px; }
.tesla-amp-bar-fill { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--green), var(--blue)); transition: width 0.5s; }
.tesla-card.charging .tesla-amp-bar-fill { background: linear-gradient(90deg, var(--green), var(--cyan)); }
.tesla-amp-labels { display: flex; justify-content: space-between; font-size: 0.55rem; color: var(--t3); font-family: 'JetBrains Mono', monospace; }
.tesla-today { display: flex; justify-content: space-between; margin-top: 8px; padding-top: 8px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.65rem; color: var(--t2); }
.tesla-today-value { font-family: 'JetBrains Mono', monospace; font-weight: 600; }

/* QR Code Section */
.qr-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.qr-card {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg2); border-radius: 8px; padding: 8px 10px;
}
.qr-box {
  width: 56px; height: 56px; flex-shrink: 0;
}
.qr-img { width: 100%; height: 100%; }
.qr-info { display: flex; flex-direction: column; gap: 2px; }
.qr-label { font-size: 0.7rem; font-weight: 600; color: var(--t2); }
.qr-sub { font-size: 0.55rem; color: var(--t3); }

/* Session user name */
.tesla-user { font-size: 0.6rem; color: var(--cyan); font-weight: 600; margin-top: 4px; }

/* ─── Cost Breakdown ──────────────────────────────────────── */
.cost-rows { display: flex; flex-direction: column; gap: 1px; }
.cr {
  display: flex; justify-content: space-between; align-items: center;
  padding: 5px 10px; border-radius: 5px; background: var(--bg2);
  font-size: 0.75rem; color: var(--t2);
}
.cr span:last-child { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 0.75rem; }
.cr.care-row { background: rgba(139,92,246,0.06); }
.cr.total-row { background: rgba(16,185,129,0.08); border: 1px solid rgba(16,185,129,0.15); margin-top: 4px; font-weight: 700; }
.discount { color: var(--green); }

/* ─── Circuits ────────────────────────────────────────────── */
.circuits-panel { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.circuit-count { font-size: 0.65rem; color: var(--t3); }
.circuits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 6px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}
.circuit-card { background: var(--bg2); border-radius: 6px; padding: 8px 10px; border: 1px solid transparent; }
.circuit-card.high-usage { border-color: rgba(245,158,11,0.25); }
.circuit-name { font-size: 0.65rem; color: var(--t2); font-weight: 500; }
.circuit-values { display: flex; justify-content: space-between; align-items: baseline; }
.circuit-power { font-family: 'JetBrains Mono', monospace; font-size: 1rem; font-weight: 600; }
.circuit-secondary { font-family: 'JetBrains Mono', monospace; font-size: 0.6rem; color: var(--t3); }
.circuit-bar { height: 3px; background: rgba(255,255,255,0.04); border-radius: 2px; overflow: hidden; margin-top: 4px; }
.circuit-bar-fill { height: 100%; border-radius: 2px; background: var(--blue); transition: width 0.5s; }
.circuit-card.high-usage .circuit-bar-fill { background: var(--amber); }

/* ─── History ─────────────────────────────────────────────── */
.history-panel { min-height: 0; }
.history-chart-container { height: 100px; position: relative; }

/* ─── Flash animations ────────────────────────────────────── */
@keyframes dataFlash {
  0% { box-shadow: 0 0 15px rgba(16,185,129,0.3); border-color: var(--green); }
  100% { box-shadow: none; border-color: var(--border); }
}
.power-gauge-card.flash { animation: dataFlash 0.6s ease-out; }
@keyframes numberPop { 0%{transform:scale(1.06)} 100%{transform:scale(1)} }
.power-number.pop { animation: numberPop 0.2s ease-out; }

/* ─── Sessions Button ─────────────────────────────────────── */
.sessions-btn {
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--blue);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
}
.sessions-btn:hover { background: rgba(59,130,246,0.25); }

/* ─── Overlay ─────────────────────────────────────────────── */
.overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  display: none;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.overlay.open { display: flex; }
.overlay-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
}
.overlay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.overlay-header h2 { font-size: 1.2rem; }
.overlay-actions { display: flex; gap: 10px; align-items: center; }
.close-btn {
  background: none; border: 1px solid var(--border); color: var(--t2);
  font-size: 1.4rem; width: 32px; height: 32px; border-radius: 8px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.close-btn:hover { background: var(--card); }
.dl-btn {
  background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3);
  color: var(--green); font-size: 0.7rem; font-weight: 600;
  padding: 6px 14px; border-radius: 6px; cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
}
.dl-btn:hover { background: rgba(16,185,129,0.25); }

/* Session Stats */
.session-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.ss-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}
.ss-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--t1);
}
.ss-label {
  font-size: 0.6rem;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

/* Session List */
.session-list { display: flex; flex-direction: column; gap: 6px; }
.session-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 0.8fr 0.8fr 0.8fr 0.8fr auto;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
}
.session-row:hover { border-color: rgba(59,130,246,0.3); }
.session-row.active-session { border-color: rgba(16,185,129,0.4); background: linear-gradient(135deg, rgba(16,185,129,0.04), var(--card)); }

.sr-id {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--blue);
}
.sr-charger { font-size: 0.65rem; color: var(--t3); }
.sr-date { color: var(--t2); font-size: 0.7rem; }
.sr-val { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 0.8rem; }
.sr-label { font-size: 0.55rem; color: var(--t3); }
.sr-cost { color: var(--green); }
.sr-status {
  font-size: 0.55rem; font-weight: 600; padding: 2px 8px;
  border-radius: 8px; text-transform: uppercase; text-align: center;
}
.sr-status.completed { background: rgba(59,130,246,0.12); color: var(--blue); }
.sr-status.charging { background: rgba(16,185,129,0.15); color: var(--green); }
.sr-status.top-off { background: rgba(139,92,246,0.12); color: var(--purple); }

.sr-pdf {
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--t2); font-size: 0.6rem; padding: 4px 8px;
  border-radius: 4px; cursor: pointer; text-decoration: none;
  font-family: 'JetBrains Mono', monospace; text-align: center;
}
.sr-pdf:hover { background: var(--card-hover); color: var(--t1); }

.no-sessions { color: var(--t3); text-align: center; padding: 40px; font-size: 0.85rem; }

/* Session Filters */
.session-filters {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px;
  align-items: center;
}
.filter-select, .filter-input {
  background: var(--card); border: 1px solid var(--border); color: var(--t1);
  padding: 7px 12px; border-radius: 8px; font-size: 0.75rem; font-family: inherit;
  outline: none;
}
.filter-select:focus, .filter-input:focus { border-color: var(--blue); }
.filter-select { min-width: 130px; }
.filter-input { width: 130px; }
.filter-input::-webkit-calendar-picker-indicator { filter: invert(0.7); }
.filter-btn {
  background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.3);
  color: var(--blue); padding: 7px 16px; border-radius: 8px; font-size: 0.7rem;
  font-weight: 600; cursor: pointer; font-family: inherit;
}
.filter-btn:hover { background: rgba(59,130,246,0.25); }
.filter-btn.filter-reset { background: rgba(100,116,139,0.1); border-color: var(--border); color: var(--t3); }

/* User Cost Table */
.user-costs-panel {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; margin-bottom: 16px;
}
.user-cost-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.user-cost-table th {
  text-align: left; font-size: 0.6rem; color: var(--t3); text-transform: uppercase;
  letter-spacing: 0.5px; padding: 6px 8px; border-bottom: 1px solid var(--border);
}
.user-cost-table td {
  padding: 8px; font-size: 0.75rem; color: var(--t2);
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.user-cost-table td:first-child { font-weight: 600; color: var(--t1); }
.user-cost-table .cost-val { font-family: 'JetBrains Mono', monospace; font-weight: 600; color: var(--green); }
.user-cost-table .kwh-val { font-family: 'JetBrains Mono', monospace; }
.user-cost-table tr:last-child td { border-bottom: none; }
.user-cost-table .total-row td { border-top: 2px solid var(--border); font-weight: 700; color: var(--t1); }

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 1200px) {
  .dashboard { grid-template-columns: 1fr; overflow-y: auto; }
  body { overflow: auto; }
}

/* ─── Mobile (iPhone) ────────────────────────────────────── */
@media (max-width: 600px) {
  body {
    overflow: auto;
    overflow-y: scroll;
    height: auto;
    min-height: 100vh;
    -webkit-overflow-scrolling: touch;
    padding-bottom: env(safe-area-inset-bottom);
  }

  #app {
    height: auto;
    min-height: auto;
    overflow: visible;
    padding: 0 10px;
    padding-top: env(safe-area-inset-top);
    padding-bottom: 40px;
  }

  /* Header - compact */
  .header {
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px 0 8px;
  }
  .header-left { gap: 6px; }
  .header-right { gap: 6px; }
  .header h1 { font-size: 0.9rem; }
  .plan-badge, .season-badge { font-size: 0.6rem; padding: 2px 7px; }
  .timestamp { font-size: 0.6rem; }
  .update-ago { font-size: 0.6rem; }

  /* Dashboard - single column, natural flow */
  .dashboard {
    grid-template-columns: 1fr;
    overflow: visible;
    flex: none;
    padding: 8px 0 20px;
    gap: 10px;
  }

  .col-left, .col-right {
    min-height: auto;
    overflow: visible;
  }

  /* Top row - stack gauge and stats */
  .top-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .power-gauge-card { padding: 10px 12px 6px; }
  .gauge-svg { max-width: 180px; }
  .power-number { font-size: 2rem; }

  /* Quick stats - 2x2 grid */
  .quick-stats {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .qs { padding: 10px; }
  .qs-val { font-size: 1.1rem; }

  /* Billing - 2x2 instead of 4 */
  .billing-row {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .bill-val { font-size: 1.1rem; }

  /* Tier info - stack */
  .tier-info {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }
  .tier-legend-inline { flex-wrap: wrap; }

  /* Chart - fixed height on mobile */
  .chart-panel { min-height: 220px; flex: none; }
  .chart-container { min-height: 160px; height: 160px; }
  .chart-tab { padding: 4px 8px; font-size: 0.6rem; }

  /* Tesla - stack cards */
  .tesla-grid { grid-template-columns: 1fr; gap: 8px; }
  .tesla-card { padding: 10px; }
  .tesla-stat-value { font-size: 1rem; }

  /* Circuits - 2 columns */
  .circuits-panel { flex: none; min-height: auto; }
  .circuits-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    max-height: none;
    overflow-y: visible;
    flex: none;
  }

  /* Cost breakdown */
  .cr { padding: 6px 10px; font-size: 0.7rem; }

  /* History chart */
  .history-chart-container { height: 120px; }

  /* Sessions overlay - full screen on mobile */
  .overlay { padding: 0; }
  .overlay-content {
    border-radius: 0;
    max-width: 100%;
    max-height: 100vh;
    height: 100vh;
    padding: 16px;
  }
  .overlay-header h2 { font-size: 1rem; }

  .session-stats {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .ss-card { padding: 10px; }
  .ss-val { font-size: 1rem; }

  /* Session rows - card layout on mobile */
  .session-row {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    padding: 10px 12px;
  }
  .sr-pdf { text-align: center; }

  .session-filters { gap: 6px; }
  .filter-select, .filter-input { width: 100%; min-width: 0; }
  .filter-btn { flex: 1; }

  .user-cost-table { font-size: 0.65rem; }
  .user-cost-table th, .user-cost-table td { padding: 6px 4px; }
}